Question

Rate•Time = Distance

How many km per hour must you swim if you want to cross a 5-km channel in 2 hours?

Answer 1

2.5 km/h

Explanation:

Here we have a distance problem where we are given the distance the time time:

Rate = ?

Time = 2hrs

Distance = 5km

The simplest way to do this is to rearrange the formula to suit our need and plug in the numbers:

`R*T=D\\R*(T)/(T)=(D)/(T) \\R=(D)/(T)`

Now, plug in the numbers and solve:

`R=(D)/(T)\\R=(5)/(2) \\R=2.5`